use serde::de::{self, Deserialize, Deserializer, MapAccess, SeqAccess, Visitor};

#[derive(Deserialize, Debug)]
struct CityMap {
    //#[serde(flatten)]
    maps: Vec<CityConnections>,
}

#[derive(Deserialize, Debug)]
struct CityConnections {
    cities: std::collections::HashMap<String, Vec<String>>,
}
